class_docstr: Unit test class for ancillary utilities. 
docstr: Sets up attributes. 
docstr_tok: ["Sets","up","attributes","."]
code: def setUp(self):
      """Sets up attributes."""
      self.num_vertices_values = [4, 10, 50, 100]
  
file_path: dragonfly/dragonfly/utils/unittest_graph_utils.py
imports: import numpy
  from scipy.sparse import dok_matrix
  from time import clock
  from .None import graph_utils
  from .base_test_class import BaseTestClass, execute_tests
label_desc: Use image node_id 1 for calling the GraphUtilsTestCase obj's underlying member method code with example usage: obj.setUp() without return types